Creating Alphabet Numbering on Jasper Report

Usually jasper report provide a numbering, accessible using REPORT_COUNT variable, but today my friend Edward Barchia asked me something interesting, how can i create a simple numbering using alphabet instead of number. Well basically, it’s actually quite easy.

Below is the image, how i do it.

Here is my complete jasper xml file,

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="report1" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="97dae3d4-5e81-4825-b4e7-cf3d1f77190f">
	<property name="ireport.zoom" value="1.2100000000000002"/>
	<property name="ireport.x" value="0"/>
	<property name="ireport.y" value="42"/>
	<queryString language="SQL">
		<![CDATA[select * from testing]]>
	</queryString>
	<field name="id" class="java.lang.Integer">
		<fieldDescription><![CDATA[]]></fieldDescription>
	</field>
	<field name="name" class="java.lang.String">
		<fieldDescription><![CDATA[]]></fieldDescription>
	</field>
	<field name="address" class="java.lang.String">
		<fieldDescription><![CDATA[]]></fieldDescription>
	</field>
	<background>
		<band splitType="Stretch"/>
	</background>
	<title>
		<band height="79" splitType="Stretch"/>
	</title>
	<pageHeader>
		<band height="35" splitType="Stretch"/>
	</pageHeader>
	<columnHeader>
		<band height="20" splitType="Stretch">
			<staticText>
				<reportElement x="50" y="0" width="100" height="20" uuid="f68bc18a-5471-4d4f-89ed-34d98bb06b6e"/>
				<text><![CDATA[name]]></text>
			</staticText>
			<staticText>
				<reportElement x="150" y="0" width="100" height="20" uuid="155f7ce1-e70c-4d93-8ebc-bad45d9f0ae1"/>
				<text><![CDATA[address]]></text>
			</staticText>
			<staticText>
				<reportElement x="0" y="0" width="50" height="20" uuid="48b8e6ef-1efd-4233-98f5-b2da6d273333"/>
				<text><![CDATA[No]]></text>
			</staticText>
		</band>
	</columnHeader>
	<detail>
		<band height="20" splitType="Stretch">
			<textField>
				<reportElement x="50" y="0" width="100" height="20" uuid="3ffd3edf-b950-4dd9-8f13-ac8942e5bb8e"/>
				<textFieldExpression><![CDATA[$F{name}]]></textFieldExpression>
			</textField>
			<textField>
				<reportElement x="150" y="0" width="100" height="20" uuid="236aec6c-34dc-4a54-ae2d-086c2a23786c"/>
				<textFieldExpression><![CDATA[$F{address}]]></textFieldExpression>
			</textField>
			<textField>
				<reportElement x="0" y="0" width="50" height="20" uuid="704b47d3-7dca-4f33-950a-a3efd0fb764b"/>
				<textFieldExpression><![CDATA["abcdefghijklmnopqrstuvwxyz".charAt( $V{REPORT_COUNT}-1 )]]></textFieldExpression>
			</textField>
		</band>
	</detail>
	<columnFooter>
		<band height="45" splitType="Stretch"/>
	</columnFooter>
	<pageFooter>
		<band height="54" splitType="Stretch"/>
	</pageFooter>
	<summary>
		<band height="42" splitType="Stretch"/>
	</summary>
</jasperReport>